there is plenty of room to get a truck & trailer in either lake...I have full size 4 door truck with 14ft grizzly boat on a trailer and put in easily on both lakes! At each boat ramp area there is plenty of room to park and turn around for the most part. On bottom lake you just dont want to go past the ramp with a boat as it does narrow down to a tighter driveway...mostly for guys fishing off the banks but you can still put boat in bottom lake.
And as far as fishing the lakes....i would hold off till late march early april to get some vegetation going on and fishin will be prime around that time anyways!